James E. Demmert
‍Founder & CIO,
Award-Winning Author

40+

years of experience managing assets

Founder

Author

Speaker

Educator

Philanthropist

About James

James is a seasoned and accomplished investment manager with over 40 years of experience in the industry. He is the founder and CIO of Main Street Research and has earned the distinction of being one of Barron’s Top Advisors for four consecutive years. He is frequently featured in media outlets such as CNBC, Bloomberg, CBS News, and Reuters, and he has been quoted in publications like The Wall Street Journal, Barron's and Forbes. James has been recognized as one of the Top 1200 Financial Advisors by Barrons, and he is well versed as an investment manager, with a particular emphasis on macroeconomic research and investment risk management. He is also a award-winning author, having penned three books on finance and investing, including his latest publication, Wall Street Lessons. He is a recognized speaker and educator, and frequently invited to deliver insightful and informative presentations on a wide range of investment topics.

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As Quoted In

Founder & CIO of Main Street Research

James is the Founder and Chief Investment Officer of Main Street Research, a privately held firm registered with the Securities and Exchange Commission since 1993. He is responsible for creating the firm’s Active Risk Management® processes, designed to protect clients from catastrophic losses. 


For four consecutive years, James has been named among Barron’s Top 1200 Advisors, and Main Street Research is recognized as one of Forbes’ Top 100 RIAs. He is also a member of the Forbes Finance Council, where he contributes insights on investment strategy, market trends, and risk management.

About Main Street Research:
Main Street Research serves as a fiduciary for private and institutional investors. The firm services include bespoke financial planning strategies directed towards generating wealth that lasts generations. The firm’s modern investment style incorporates individual securities which provide transparency, low cost and an ability to engage our distinct Active Risk Management process to protect clients from significant loss. This combination of growth and risk management paired with a fee structure aligned with client results have been essential to the firm’s client’s success for three decades. For more information, please visit www.ms-research.com.

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Award-winning author

James is an accomplished writer who has authored three investment books: The Journey to Wealth, The Sustainable Endowment, and his latest book, Wall Street Lessons, which was released in the fall of 2023. His books have won several awards, owing to the wealth of knowledge on finance and investing that they offer. In Wall Street Lessons, James shares insights from his three-decade-long experience on Wall Street, including intriguing lessons on behavioral finance. Whether you’re a seasoned investor or just getting started, you’ll find valuable information and fresh perspectives in his work. In addition to his books, James has written numerous articles on finance and investment management, which have been featured in various financial publications such as The Wall Street Journal, Barron’s, Financial Times, Rolling Stone, Investors Business Daily, and Fortune Magazine, among others.

The Journey to Wealth describes how you can create real wealth using a strategy that works in today’s volatile, globalized financial world—a proven strategy that increasingly builds returns without succumbing to catastrophic market crashes.

The Sustainable Endowment is a profound look at the complications that exist in non-profit governance as well as the forces that move financial markets and determine the success or failure of non-profit endowments, impacting whether they survive or not.

Wall Street Lessons, shows you how to leave that mindset behind and become a disciplined, rational investor. You will learn how to avoid 13 of the most common psychological investment blunders you might be driven to make due to fear, greed, or both.

Speaker & educator

As a sought-after speaker and educator, James’ insightful and informative presentations cover a wide spectrum of investment topics, including market trends, risk management, and asset allocation, making him a recognized authority in his field. Over the years, he has been invited to share his expertise with numerous public and private institutions, leaving an indelible mark on audiences at events hosted by prestigious organizations like the American Association of Individual Investors (AAII), Charles Schwab, Private Markets Group, Portfolio Summits, and LinkBridge Investors. James is an active member of several prominent professional associations, including the Forbes Finance Council, The CFA Institute, and the Financial Planning Association.

What truly sets James apart is his unwavering passion for investing and his commitment to educating both upcoming and seasoned investors. He annually teaches a course at Berkshire School for high-school students, aiming to equip them with essential financial skills and wisdom to the next generation of investors. Through his speaking engagements and educational initiatives, James contributes to the broader understanding of finance and helps individuals make informed investment decisions.

James is an active member of the Harvard Club of NYC’s Investment Management Group, a special interest group focused on diverse investment topics. The group has a 20-year history of hosting expert guest speakers across areas like equities, real estate, venture capital, and more, alongside dynamic member-led roundtable discussions. Through this group, James engages with a vibrant community of professionals passionate about investment and financial innovation.

Philanthropist

James is a dedicated philanthropist with a strong presence in New York, where he focuses on expanding access to financial education for the next generation and helping nonprofit organizations thrive through investment insight. He is also actively involved in efforts to preserve cultural and artistic heritage.

He currently serves as a Trustee of Berkshire School, contributing to both the Endowment and Finance Committees.

Before relocating to the East Coast, James was named Citizen of the Year in Tiburon, California—a recognition of his deep commitment to community engagement and strategic support for organizations making a lasting impact.

Leadership & Global Perspective

James E. Demmert is actively engaged in New York’s financial community, where he regularly connects with leading economists, market influencers, and institutional voices shaping the global economic landscape. Through high-level discussions and thought leadership, he contributes insights and perspective on the forces driving the future of markets worldwide.

James & Economist Mohamed A. El-Erian

Civic & social organizations supported

Memberships

Interests

Classic Porsche Collector

Fashion

Arts

"Heritage lives in what’s built to last—beauty, tradition, and meaning"

James E.Demmert

When not immersed in the world of investing and philanthropy, James lives with a deep reverence for heritage—in all its forms.

A lifelong Porsche collector, he finds joy not only in the craftsmanship of the cars but in the stories they carry.

Over the years, he and his family have made it a tradition to create classic rallies across Europe and the U.S.—celebrating exploration, elegance, and connection.

James finds a sense of heritage in art, music, and in his favorite brand, Thom Browne—a reflection of the structure and simplicity of his school days, where tradition first met personal style.

Father-Son Porsche Road Trips That Make Headlines

In 2022, James and his son Hudson embarked on a remarkable 3,000-mile road trip through southern Europe in James’ 1959 356A Cabriolet, with a special stop at the Porsche Museum and factory in Stuttgart. This unforgettable journey was covered in Excellence Magazine. In 2024, their adventures continued on an even grander scale, spanning over 4,000 miles across 9 countries, earning further media attention for their shared love of Porsche and unforgettable father-son moments.

Connect With James

The Author, James Demmert, is the Founder and Chief Investment Officer of Main Street Research (“MSR”), an SEC registered investment adviser. The information presented on this site is only related to the books published by Mr. Demmert. The information presented here is not a solicitation or an offer to sell securities or investment advisory services by MSR.  Information throughout this internet site, whether charts, articles, or any other statements regarding market or other financial information, is obtained from sources which we, and our suppliers believe reliable, but we do not warrant or guarantee the timeliness or accuracy of this information. Neither our information providers nor we shall be liable for any errors or inaccuracies, regardless of cause, or the lack of timeliness of, or for any delay or interruption in the transmission thereof to the user. The book reviews mentioned on this website are only related to reviews of the books and the author (James Demmert) and are not associated with Main Street Research’s advisory services.

Copyright © 2023 James Demmert. All rights reserved.

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The Journey to Wealth:

Smart Investment Strategies to Stay Ahead of the Curve

The Journey to Wealth describes how you can create real wealth using a strategy that works in today’s volatile, globalized financial world—a proven strategy that increasingly builds returns without succumbing to catastrophic market crashes.

For centuries, most investors—individual and institutional—have tended to achieve only below-average results because they repeat the same mistakes: lack of knowledge about how financial markets work; buying high and selling low; succumbing to the foibles of their human psychology; following Wall Street’s so-called “wisdom;” failing to use risk management tools; and falling victim to sudden market crashes that erase earnings.

To avoid these mistakes, James walks you through a proven investment process that leads to steady long-term gains under any market condition. His philosophy and approach are based on decades of investment experience, understanding market cycles, using strategic research to identify market opportunities and pitfalls, and employing numerous risk management tools to prevent catastrophic loss.

The Sustainable Endowment:

10 Principles to Make Your Foundation or Nonprofit Last For Decades

The Sustainable Endowment is written for executives and board members of small- to mid-size U.S.-based nonprofits, charities, or foundations. Running a nonprofit requires specialized knowledge and skills, especially regarding foundation management and investing your endowment so it remains sustainable for years to come. This book walks you through the basics and best practices of what you need to know to be successful.

The book is organized around 10 principles that provide comprehensive explanations and advice on the major issues that challenge nonprofits.

Whatever your level of experience in running a nonprofit, The Sustainable Endowment will enhance your knowledge and give you confidence in working with a financial professional to invest your funds and make them last for decades.

Wall Street Lessons:

Overcoming Fear, Greed and Being Your Own Worst Enemys

As human beings, we are amazingly brilliant creatures. But, alas, we human beings are also astonishingly flawed. Our brain still fails us when it comes to investing. We are often driven by our emotions—either fear or greed—rather than by research, thoughtful analysis, and logic. We lack a sound system of investment principles and the right tools to maximize our returns and protect our assets from the ups and downs of the market.

In Wall Street Lessons, James Demmert shows you how to leave that mindset behind and become a disciplined, rational investor. You will learn how to avoid 13 of the most common psychological investment blunders you might be driven to make due to fear, greed, or both. Today’s Wall Street is fast-paced, chaotic, and unpredictable, and so you will see why many popular investment theories, such as modern portfolio theory—with its “diversify” and “buy and hold” strategy—no longer work.

Whether you are a novice or an experienced investor, Wall Street Lessons introduces you to a smarter way of thinking about growing your wealth with a more effective process that provides a greater possibility of positive returns and stronger risk management.